Originally Posted by d_1212
Hey guys, so I'm looking at placing an order for 4.10 gears and I'm also upgrading to a new 31 spline diff. On American muscle it has the drop down menu for the installation and bearing kit. Since I'm buying a new diff will I need to buy this kit or just the gears????
Very cool! That's an awesome build list and it will definitely make a huge difference. Gears are the most beneficial mod you can do for your Mustang, in my opinion!
If you're replacing the rear as well, you won't need to get the bearings. Everything inside your new rear end is going to be new!
Hope this helps! Hit me up if you have any questions or need some assistance in the near future.